It is a quite typical portuguese municipal flag, with the coat of arms
centered on a background gyronny (city rank)
of green and yellow. The coat of arms is argent, a St. James cross between
two rudders proper, all between two garbs or tied gules; in point, on mound
verd a wavy fess azure fimbriated argent. Mural crown argent with five visible
towers (city rank), and white scroll reading
in black upper case letters "CIDADE DO MONTIJO". The
arms are more or less canting, as "montijo" is an old form for
"small hill" (montilho).Antonio Martins, 25 Feb 2000

Montijo municipality had 36 000 inhabitants in 1990, and it is
divided in 8 communes, covering 347 km2. It belongs to the
Setúbal District and to the old province of
Extremadura.Antonio Martins, 25 Feb 2000